Many Ukrainians, who have faced years of Russian attacks, did not take the messages seriously and doubted their veracity.
Fake nuclear warning from hacked app sparks unease but not panic in Ukraine

Original reporting
BBC News: read the full reportFollow this story
Earlier reports and follow-ups on the same developing story.
- Nuclear radiation in Russia, Ukraine? No, just hacked warning alerts
- Hackers send fake nuclear threat alert to Ukraine emergency app
- Fake nuclear warnings issued after Ukrainian and Russian air alert apps hacked
- Fake nuclear warnings in Ukraine as Moscow, Kyiv report separate cyberattacks on emergency apps
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